leanEthereum · tcoratger · Mar 16, 2026 · Mar 16, 2026 · Mar 17, 2026
diff --git a/.codespell-ignore-words.txt b/.codespell-ignore-words.txt
@@ -4,7 +4,7 @@ subspecs
 crate
 crates
 ethereum
-poseidon2
+poseidon1
 keccak
 blake
 merkle

diff --git a/packages/testing/src/consensus_testing/test_keys/test_scheme/0.json b/packages/testing/src/consensus_testing/test_keys/test_scheme/0.json
diff --git a/packages/testing/src/consensus_testing/test_keys/test_scheme/1.json b/packages/testing/src/consensus_testing/test_keys/test_scheme/1.json
diff --git a/packages/testing/src/consensus_testing/test_keys/test_scheme/10.json b/packages/testing/src/consensus_testing/test_keys/test_scheme/10.json
diff --git a/packages/testing/src/consensus_testing/test_keys/test_scheme/11.json b/packages/testing/src/consensus_testing/test_keys/test_scheme/11.json
diff --git a/packages/testing/src/consensus_testing/test_keys/test_scheme/2.json b/packages/testing/src/consensus_testing/test_keys/test_scheme/2.json
diff --git a/packages/testing/src/consensus_testing/test_keys/test_scheme/3.json b/packages/testing/src/consensus_testing/test_keys/test_scheme/3.json
diff --git a/packages/testing/src/consensus_testing/test_keys/test_scheme/4.json b/packages/testing/src/consensus_testing/test_keys/test_scheme/4.json
diff --git a/packages/testing/src/consensus_testing/test_keys/test_scheme/5.json b/packages/testing/src/consensus_testing/test_keys/test_scheme/5.json
diff --git a/packages/testing/src/consensus_testing/test_keys/test_scheme/6.json b/packages/testing/src/consensus_testing/test_keys/test_scheme/6.json
diff --git a/packages/testing/src/consensus_testing/test_keys/test_scheme/7.json b/packages/testing/src/consensus_testing/test_keys/test_scheme/7.json
diff --git a/packages/testing/src/consensus_testing/test_keys/test_scheme/8.json b/packages/testing/src/consensus_testing/test_keys/test_scheme/8.json
diff --git a/packages/testing/src/consensus_testing/test_keys/test_scheme/9.json b/packages/testing/src/consensus_testing/test_keys/test_scheme/9.json
diff --git a/src/lean_spec/subspecs/containers/__init__.py b/src/lean_spec/subspecs/containers/__init__.py
@@ -5,7 +5,7 @@
 efficient merkleization.
 
 Hash functions used for merkleization differ by devnet. Early devnets use
-SHA256. Later devnets will switch to Poseidon2 for better SNARK compatibility.
+SHA256. Later devnets will switch to Poseidon1 for better SNARK compatibility.
 """
 
 from .attestation import (

diff --git a/src/lean_spec/subspecs/poseidon1/__init__.py b/src/lean_spec/subspecs/poseidon1/__init__.py
@@ -0,0 +1,15 @@
+"""Specification for the Poseidon1 permutation."""
+
+from .permutation import (
+    PARAMS_16,
+    PARAMS_24,
+    Poseidon1,
+    Poseidon1Params,
+)
+
+__all__ = [
+    "Poseidon1",
+    "Poseidon1Params",
+    "PARAMS_16",
+    "PARAMS_24",
+]
-Original file line number
+Diff line change
@@ Expand Up / @@ -4,7 +4,7 @@ subspecs @@
     crate
     crates
     ethereum
-    poseidon2
+    poseidon1
     keccak
     blake
     merkle
@@ Expand Down @@